The 17-year-old singer wrapped an arm around his stunning girlfriend as she hosted the awards ceremony.

The event was Selena's first public appearance since her hospitalisation for malnutrition last week.

Adored: Fans in the crowd reach out to Justin in the hope of touching his hand

Cute couple: The duo teamed up on stage at the awards bash

Bieber took to the stage to accept an award, which he shared with hip hop star Drake, after they were named joint winners of best international Canadian video.

While 18-year-old Gomez slipped into an array of revealing outfits during the course of the evening, Justin stuck to his guns, donning a retro T-shirt with a printed picture of Saved By The Bell Nineties pin-up Tiffani Thiessen.

Double win: The teen singer also picked the favourite artist gong for his his hit Somebody to Love

You'd have thought the 17-year-old would have been too young to be a fan of the American teen sitcom - but that didn't stop him wearing the top, which showed Thiessen in character as high school student Kelly Kapowski.

Justin also scooped the honour for favourite artist by ordinary Canadians, adding yet more awards to his growing trophy collection.

Outfits galore: Selena made a series of wardrobe changes throughout the evening, seen right getting speaking to axed 90210 star Trevor Donovan

Bad boy: Irish heartthrob Colin Farrell also joined the former Disney star on stage to present an award

Joint winners: Justin and Drake, who was look a little fuller in the face than usual, both shared the award for International Video of the Year by a Canadian

Lady Gaga was the other big winner of the night, opening the show with a performance of Edge of Glory and closing out with Born This Way - in which she 'hatched' from a cocoon.

The singer was voted the most popular international artist in the fan category, while also taking home the best international video for Judas.

However, she put in a relatively low-key claim for the fashion crown, wearing outfits which by her standards were somewhat conservative.

Host turned performer: Selena took a break from her presenting duties to sing her hit Who Says

Crowd mania: The fans in the audience loved the performance and scrambled for their cameras as she sang

The 25-year-old skipped the red carpet as she turned up to the event in Toronto, Canada, but was pictured showing off what appeared to be a slightly fuller figure in a form-fitting LBD.

She completed the look with her now trademark turquoise wig and a pair of bondage-style knee-high boots.

The Telephone singer later posed for photographers, adding to her ensemble a towering pair of platforms, a blue blazer and a colourful pair of tights.

Legs Eleven: The singer and actress stood firmly in the spotlight as she made her red carpet arrival

Legs on show: Nikki wore a strapless dress which gathered at then waist while Pretty Little Liars star Shay Mitchell dazzled in a sexy black ensemble

Gothic style: Canadian singer-songwriter Fefe Dobson opted for a long black dress split to the thigh with a dramatic plunging back

Sk8ter Girl: Canadian-born singer Avril Lavigne performs during the event with her electric guitar in hand

Farrell is currently in Canada shooting the remake of the 1990 movie, Total Recall but found time to attend the ceremony, which also featured performances from Bruno Mars and Canadian-born singer, Avril Lavigne.

On accepting her prestigious role as the event's co-host, Selena recently told the Toronto Herald: 'It's exciting and scary at the same time because (Wizards) was my safety net.

'That's all I really know so it'll be interesting to detach from that and be on my own.'

Selena has had a rocky few weeks after she fell ill and was admitted into hospital for 24 hours with malnutrition last week.

Making some noise: Rapper Snoop Dog performs with Far East Movement during the ceremony